Evidence map›Paper›PMID 33754080›Full record

ArticleBMJ open sport & exercise medicine2021

Strength development according with age and position: a 10-year study of 570 soccer players.

Robson Dias Scoz, Bruno Mazziotti Oliveira Alves, Ricardo Lima Burigo, Edgar Ramos Vieira, Luciano Maia Alves Ferreira, Rubens Alexandre da Silva, Rogerio Pessoto Hirata, Cesar Ferreira Amorim

Abstract read
In one paragraph

Article in BMJ open sport & exercise medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

7 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Dynamometric Strength Profile of Hip Muscles in Youth Soccer Players.International journal of environmental research and public health · 2023
    Article
  6. Article
  7. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Robson Dias ScozUniversidade Cidade de Sao Paulo (UNICID), Sao Paulo, Brazil.ORCID 0000-0003-2500-5388
Bruno Mazziotti Oliveira AlvesUniversidade Cidade de Sao Paulo (UNICID), Sao Paulo, Brazil.ORCID 0000-0002-0108-7908
Ricardo Lima BurigoUniversidade Cidade de Sao Paulo (UNICID), Sao Paulo, Brazil.ORCID 0000-0001-7358-923X
Edgar Ramos VieiraPhysical Therapy Department, Florida International University (FIU), Miami, Florida, USA.ORCID 0000-0002-1011-5077
Luciano Maia Alves FerreiraKinesioLab, Instituto Piaget, Silves, Portugal.ORCID 0000-0001-7536-9193
Rubens Alexandre da SilvaLaboratoire de Recherche BioNR, Université du Quebec à Chicoutimi (UQAC), Saguenay, QC, Canada.ORCID 0000-0001-6879-436X
Rogerio Pessoto HirataDepartment of Health Science and Technology, Aalborg Universitet, Aalborg, Denmark.ORCID 0000-0002-9943-2713
Cesar Ferreira AmorimUniversidade Cidade de Sao Paulo (UNICID), Sao Paulo, Brazil.ORCID 0000-0003-0137-5659

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

BACKGROUND/

aimThe purpose of this study was to compare the isokinetic peak torque profiles from the quadriceps and hamstrings muscles during concentric and eccentric contractions in elite Brazilian soccer players across different field positions and age categories. Our hypothesis was that soccer players from different field positions are subjected to different ageing-related effects on their isokinetic peak torque.

methodsThis is a retrospective study based on professional elite-level soccer players between the years 2009 and 2019. It included 570 adult males who played for at least 5 years on first or second Brazilian divisions. Playing positions were divided as: goalkeepers, defenders, sidebacks, midfielders and forwards. Age categories were also divided as: G1 (17-20 years old), G2 (21-24 years old), G3 (25-28 years old), G4 (29-32 years old) and G5 (33 years old or more).

resultsThe results indicate a moderate effect of age (F(4545)=8.197; p<0.001; η

conclusionsSoccer players from different field positions are subjected to different ageing related effects on their muscular performance during their career special attention should be given to these players to avoid reduction in physical performance.

Indexed as

agingassessing physical training modalities in enhancing sports performanceathletebiomechanicssoccer

Identifiers

PMID33754080
PMCPMC7938987

What OpenQuestion holds

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LicenceCC BY-NC
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.